Situation:

Florescent Light Fixture in Spray Booth, Fixture is what they call inside access. (Means the lamps are changed and access to ballast is from inside the Spray Booth)
Inside fixture is a micro switch that will open when the lens of the fixture is opened.

Question:
Should circuit be designed so that when the “Micro Switch” is opened all power including the line side of this micro switch is de-energized
or
Is it ok to use this switch to de-energize only the corresponding fixture leaving the power feeding this switch energized.

The classifications of fixtures that we have seen to date have been installed (CSA approved) in Div. 1 Class 1 and 2 installations.

Hope the description of the situation is clear!